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#IRISH SEA – The Irish Sea Offshore Racing Association (ISORA) is pushing ahead with plans to incorporate 'virtual' marks into at least some of it's offshore programme in 2012. Afloat.ie reported on the prospect last September.

The moves come as the offshore body goes from strength to strength on the Irish Sea, recruiting more boats to venture out of Dublin Bay and to try longer distance races. It is a reversal of fortunes for offshore sailing that had been vitally wiped out just a few years ago.

The idea for the new marks sprung from last years' Lyver Race from Liverpool Yacht Club where a virtual mark was successfully used as a mark on the course (i.e. coordinates only).

The problem for ISORA though, with the exception of M2 buoy, is most of the marks used in ISORA raeces are within five to seven miles of the Irish coast and there are no marks off the Welsh coast.

Using virtual marks further off the coast would greatly help in setting courses that are not just long reaching legs. The day races, particularly from Dun Laoghaire could be far more interesting.

One of the problems about using the virtual marks though is the question of "how do you ensure that all boats have rounded the mark?"

The boats in the Lyver race had trackers fitted but ISORA commodore Peter Ryan says his experience of watching several boats round the 'mark' was that they tended to take it 'wide'.

Ryan is looking into the possibility of "obtaining" a set of trackers that could be used for all ISORA races.

Another suggestion is that a photograph could be taken on a mobile phone of the boat's GPS display at the time of the rounding. The photo would then be sent by SMS to the race office as part of the normal finish time declaration.

The feasibility of such a move is just one of the items on the agenda at the association's agm on November 19th at the National Yacht Club in Dun Laoghaire, a highlight of the offshore year.

Published in ISORA

The Half Ton Class was created by the Offshore Racing Council for boats within the racing band not exceeding 22'-0". The ORC decided that the rule should "....permit the development of seaworthy offshore racing yachts...The Council will endeavour to protect the majority of the existing IOR fleet from rapid obsolescence caused by ....developments which produce increased performance without corresponding changes in ratings..."

When first introduced the IOR rule was perfectly adequate for rating boats in existence at that time. However yacht designers naturally examined the rule to seize upon any advantage they could find, the most noticeable of which has been a reduction in displacement and a return to fractional rigs.

After 1993, when the IOR Mk.III rule reached it termination due to lack of people building new boats, the rule was replaced by the CHS (Channel) Handicap system which in turn developed into the IRC system now used.

The IRC handicap system operates by a secret formula which tries to develop boats which are 'Cruising type' of relatively heavy boats with good internal accommodation. It tends to penalise boats with excessive stability or excessive sail area.

Competitions

The most significant events for the Half Ton Class has been the annual Half Ton Cup which was sailed under the IOR rules until 1993. More recently this has been replaced with the Half Ton Classics Cup. The venue of the event moved from continent to continent with over-representation on French or British ports. In later years the event is held biennially. Initially, it was proposed to hold events in Ireland, Britain and France by rotation. However, it was the Belgians who took the ball and ran with it. The Class is now managed from Belgium. 

At A Glance – Half Ton Classics Cup Winners

  • 2017 – Kinsale – Swuzzlebubble – Phil Plumtree – Farr 1977
  • 2016 – Falmouth – Swuzzlebubble – Greg Peck – Farr 1977
  • 2015 – Nieuwport – Checkmate XV – David Cullen – Humphreys 1985
  • 2014 – St Quay Portrieux – Swuzzlebubble – Peter Morton – Farr 1977
  • 2013 – Boulogne – Checkmate XV – Nigel Biggs – Humphreys 1985
  • 2011 – Cowes – Chimp – Michael Kershaw – Berret 1978
  • 2009 – Nieuwpoort – Général Tapioca – Philippe Pilate – Berret 1978
  • 2007 – Dun Laoghaire – Henri-Lloyd Harmony – Nigel Biggs – Humphreys 1980~
  • 2005 – Dinard – Gingko – Patrick Lobrichon – Mauric 1968
  • 2003 – Nieuwpoort – Général Tapioca – Philippe Pilate – Berret 1978

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